VAPOR COOKER

A steam cooker includes: a heating chamber (20) that stores an item to be cooked (90); a removable water tank (30); a steam generating device (40) that includes a housing (41) to which water is supplied from the water tank (30) and that heats, with a steam generating heater (42), the water within the housing (41) and supplies steam to the heating chamber (20); a hardness detection portion (36) that includes a plurality of electrodes (30a to 30c) which are immersed in water within the water tank (30) or a water storage portion (31) coupled to the water tank (30) and that detects the hardness of the water within the water tank (30) by a resistance between the electrodes (30a to 30c); and a notification portion (4) that provides a notification of a cleaning time of the steam generating device (40), in which, when the hardness of the water within the water tank (30) that is detected by the hardness detection portion (36) is high, the interval of cleaning of the steam generating device (40) is shorter than an interval set when the hardness detected by the hardness detection portion (36) is low